/*
 * Copyright 1999-2018 Alibaba Group Holding Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.alibaba.druid.bvt.sql.oracle.pl;

import com.alibaba.druid.sql.OracleTest;
import com.alibaba.druid.sql.SQLUtils;
import com.alibaba.druid.sql.ast.SQLStatement;
import com.alibaba.druid.sql.visitor.SchemaStatVisitor;
import com.alibaba.druid.util.JdbcConstants;

import java.util.List;

public class Oracle_pl_while_loop extends OracleTest {
    public void test_0() throws Exception {
        String sql = "DECLARE\n" +
                     "\tv1 NUMBER := 5;\n" +
                     "BEGIN\n" +
                     "  \tWHILE v1 > 0 LOOP\n" +
                     "    \tDBMS_OUTPUT.PUT_LINE('Sum: ' || v1);\n" +
                     " \t\tv1 := v1 - 1;\n" +
                     "  \tEND LOOP;\n" +
                     "END;"; //

        List<SQLStatement> statementList = SQLUtils.parseStatements(sql, JdbcConstants.ORACLE);
        assertEquals(1, statementList.size());
        SchemaStatVisitor visitor = SQLUtils.createSchemaStatVisitor(JdbcConstants.ORACLE);
        for (SQLStatement statement : statementList) {
            statement.accept(visitor);
        }

       // System.out.println("Tables : " + visitor.getTables());
       // System.out.println("fields : " + visitor.getColumns());
       // System.out.println("conditions : " + visitor.getConditions());
       // System.out.println("relationships : " + visitor.getRelationships());
       // System.out.println("orderBy : " + visitor.getOrderByColumns());

        assertEquals(0, visitor.getTables().size());

       // Assert.assertTrue(visitor.getTables().containsKey(new TableStat.Name("employees")));
       // Assert.assertTrue(visitor.getTables().containsKey(new TableStat.Name("emp_name")));
       //
       // Assert.assertEquals(7, visitor.getColumns().size());
       // Assert.assertEquals(3, visitor.getConditions().size());
       // Assert.assertEquals(1, visitor.getRelationships().size());

        // Assert.assertTrue(visitor.getColumns().contains(new TableStat.Column("employees", "salary")));

        {
            String output = SQLUtils.toSQLString(statementList, JdbcConstants.ORACLE);
            System.out.println(output);
            assertEquals("DECLARE\n" +
                            "\tv1 NUMBER := 5;\n" +
                            "BEGIN\n" +
                            "\tWHILE v1 > 0 LOOP\n" +
                            "\tDBMS_OUTPUT.PUT_LINE('Sum: ' || v1);\n" +
                            "\tv1 := v1 - 1;\n" +
                            "\tEND LOOP;\n" +
                            "END;", //
                    output);
        }
        {
            String output = SQLUtils.toSQLString(statementList, JdbcConstants.ORACLE, SQLUtils.DEFAULT_LCASE_FORMAT_OPTION);
            assertEquals("declare\n" +
                            "\tv1 NUMBER := 5;\n" +
                            "begin\n" +
                            "\twhile v1 > 0 loop\n" +
                            "\tDBMS_OUTPUT.PUT_LINE('Sum: ' || v1);\n" +
                            "\tv1 := v1 - 1;\n" +
                            "\tend loop;\n" +
                            "end;", //
                    output);
        }
    }
}
